Oh, this one's a real jewel! A local museum has a whole set of photographs by two photographers, William Notman and Andrzej Manciejewski, taken from identical spots, but with Notman working from 1869-1895, and Manciejewski working in and around the year 2000. They're presented side by side in a slideshow with audio reflecting the sounds each would have heard standing in these locations, and how they would have changed over the centuries. The link is below and the city being photographed is Montreal, which was the economic and cultural heart of the Dominion, as Canada's largest city, up and until the political instability of the seventies.
http://www.mccord-museum.qc.ca/dq/index-e.html